研究了LiCl-KCl-AlCl3-La2O3熔盐体系中共析出制备Al-Li-La合金的可行性.研究表明,在LiCl-KCl熔盐中,AlCl3将La2O3氯化为LaCl3,使电解制备Al-Li-La合金顺利进行.借助循环伏安法对熔盐体系的电化学行为进行分析发现,对质量比为45∶45∶5∶2的LiCl-KCl-AlCl3-La2 O3熔盐,当阴极电流密度大于0.25 A/cm2,可以实现Al、Li和La的共析出.通过研究电解温度、阴极电流密度和电解时间对合金组成的影响,得到了较佳的电解参数:电解温度650℃,在LiCl-KCl混合熔盐中加入质量分数为5％的AlCl3和2％的La2O3,阴极电流密度12.5 A/cm2,电解时间1h.X射线衍射对合金分析测试表明,合金主要由Al2 La和βLi组成.
参考文献
| [1] | CHENG Xiaoyu,WANG Xiaomei.Development and Study of Aluminum-Lithium Alloys[J].China Nonferrous Met,2008,12:72-73 (in Chinese).程晓宇,王晓梅.铝锂合金研究与发展[J].中国有色金属,2008,12:72-73. |
| [2] | HUANG Lanping,ZHENG Ziqiao,HUANG Yongping.Microstructure and Properties of 2197 Al-Li Alloy[J].Chinese J Nonferrous Met,2004,14 (12):2066-2072 (in Chinese).黄兰萍,郑子樵,黄永平.2197铝-锂合金的组织和性能[J].中国有色金属学报,2004,14(12):2066-2072. |
| [3] | LI Jidong,ZHANG Mingjie,ZHANG Tingan,et al.Preparation of Al-Li Master Alloys by Molten Salt Electrolysis[J].Chinese J Nonferrous Met,2008,18(8):1555-1559(in Chinese).李继东,张明杰,张廷安,等.熔盐电解法制备铝锂中间合金[J].中国有色金属学报,2008,18(8):1555-1559. |
| [4] | PAN Fusheng,ZHANG Dingfei.Aluminum Alloys and Application[M].Beijing:Chemical Industry Press,2006:370-372(in Chinese).潘复生,张丁非.铝合金及应用[M].北京:化学工业出版社,2006:370-372. |
| [5] | Xu Y,Geng J P,Liu Y F.Effect of Rare Earth Elements on Anisotropy and Microstructure of Al-Li Alloy 2195 Sheets[J].J Rare Earths,2006,24:793-796. |
| [6] | Meng L,Zheng X L.Overview of the Effect of Impurities and Rare Earth elements in Al-Li Alloys[J].Mater Sci Eng A,1997,A237:109-118. |
| [7] | XU Guangxian.Rare Earth Elements(Part Ⅱ)[M].Beijing:Metal Iurgical Industry Press,1995:462-464 (in Chinese).徐光宪.稀土(下)[M].北京:冶金工业出版社,1995:462-464. |
| [8] | Ebe H,Ueda M,Ohtsuka T.Electrodeposition of Sb,Bi,Te,and Their Alloys in AlCl3-NaCl-KCl Molten Salt[J].Electrochim Acta,2007,53:100-105. |
| [9] | Polyakova L P,Taxilb P,Polyakov E G.Electrochemical Behaviour and Codeposition of Titanium and Niobium in Chloride Fluoride Melts[J].J Alloys Compd,2003,359:244-255. |
| [10] | Castrillejo Y,Bermejo M R,Barrado E,et al.Electrochemical Behaviour of Erbium in the Eutectic LiCl-KCl at W and Al Electrodes[J].Electrochim Acta,2006,51:1941-1951. |
| [11] | Bermejoa M R,Go'meza J,Marti'nezb A M,et al.Electrochemistry of Terbium in the Eutectic LiCl-KCl[J].Electrochim Acta,2008,53:5106-5112. |
| [12] | Bermejo M R,de la Rosa F,Barrado E,et al.Cathodic Behaviour of Europium(Ⅲ) on Glassy Carbon,Electrochemical Formation of Al4Eu,and Oxoacidity Reactions in the Eutectic LiCl-KCl[J].J Electroanal Chem,2007,603:81-95. |
| [13] | Bermejo M R,Barrado E,M arti;'nez A M,et al.Electrodeposition of Lu on W and Al Electrodes:Electrochemical Formation of Lu-Al Alloys and Oxoacidity Reactions of Lu(Ⅲ) in the Eutectic LiCl-KCl[J].J Electroanal Chem,2008,617:85-100. |
| [14] | HAN Wei,CHU Yanlong,ZHANG Milin,et al.Effect of Praseodymium on Microstructure and Properties of Mg-Li Alloy[J].Rare Met,2009,33(5):662-665(in Chinese).韩伟,褚衍龙,张密林,等.镨对镁-锂合金微观组织及性能的影响[J].稀有金属,2009,33(5):662-665. |
| [15] | Han W,Tian Y,Zhang M L,et al.Preparing Different Phases of Mg-Li-Sm Alloys by Molten Salt Electrolysis in LiCl-KCl-MgCl2-SmCl3 Melts[J].J Rare Earths,2010,28 (2):227-231. |
| [16] | WEI Shuquan,ZHANG Milin,HAN Wei,et al.Study on Electrochemical Codeposition of Mg-Li-Gd Alloys from Chloride Melts[J].Acta Metall Sin,2011,47(2):173-178 (in Chinese).魏树权,张密林,韩伟,等.氯化物熔盐体系共电沉积法制备Mg-Li-Gd合金的研究[J].金属学报,2011,47(2):173-178. |
| [17] | GAO Yunming,ZENG Zhi,PAN Jinhua.Solubility of Fe2 O3 in Molten Salts of Borax[J].J Wuhan Univ Sci Tech,2006,29(6):552-554(in Chinese).高运明,曾智,潘金华.氧化铁在硼砂熔盐中溶解度研究[J].武汉科技大学学报,2006,29(6):552-554. |
| [18] | Papatheodorou G N,Kucera G H.Vapour Complexes of Samarium (Ⅲ) and Samarium (Ⅱ) Chlorides with Aluminium (Ⅲ) Chloride[J].Inorg Chem,1979,18:385-389. |
| [19] | Binnewies M,Milke E.Thermochemical Data of Elements and Compounds.Second,Revised and Extended Edition[M].Wiley VCH Verlag GmbH,Weinheim,Germany,2002. |
| [20] | Li Y M,Wang F L,Zhang M L,et al.Study on Electrochemical Preparation of Al-Li-Y Alloys from Y2O3 in LiCl-KCl-AlCl3 Molten Salts[J].J Rare Earths,2011,29 (4):378-382. |
| [21] | Gao F X,Wang C S,Liu L S,et al.Electrode Process of La(Ⅲ) in Molten LiCl-KCl[J].J Rare Earths,2009,27(6):986-991. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%